Apparatus for the manufacture of steam-boiler furnaces and flues.



No. 794.092. PATENTED JULY 4, 19.05, E. GEARING & W RAINFORTH. APPARATUS FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND PLUES.

APPLICATION FILED MAR. 12, 1904 9 SHEBTSSHEBT l.

PATENTED JULY 4-, 1905.

HEARING & W. RAINFGRJH. APPARATUfi FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND FLUBS,

APPLICATION FILED MAR. 12, 1904.

9 SHEETS-SHEET Z PATBNTED JULY 4. 1905. E. GEARING & W. RAINFORTH. APPARATUS FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND FLUBS.

APPLICATION FILED MAR-12, 1904.

9 SHEETS--SHEBT 3.

No. 794.092. PATENTED JULY 4L, 1905. E. GEARING & W. RAINFORTH. APPARATUE FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND FLUES.

AFPLIOATION FILED MAE-12. 1904.

9 SHEETS-SHBET 4.

Non 794.092. PATENTED JULY '4. 1.905.

E. GEARING (K; W. RAINFORT I APPARATUfi FOR THE MANUFACTURE 01-" STEAM BOILER FURNACES AND PLUES.

APPLIOATION FILED MAR. 12, 1904 9 SHEETS-SHEET 5.

N0. WMUOW- PATENTED JULY 4 1905. E. QkEARING & W. RAINFORTH. APPARATUE X FUR THE MANUPAUTURE OF [WE/AM BOILER FURNACE AND FLUES. MPLIOATIOH FILM) MAR. 12. 1904:.

No 79410092. PATBNTED JULY 4t, 1905. E. GEAMNG 65; W. RAIN-FORTH.

APPARATUS FOR THE MANUFACTURE OF STEAM BOILER PUHNAGEE: AND PLUES.

APPLIUATIOII FILED MAE. 12, 1904.

9 SHEETS-431K311? 7.

PATBNTED JULY 4, 190a.

GEARING (in W. RAINFORTH. AFPARATUS FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND FLUES.

APPLIOATION FILED MAR. 12, 190 1.

9 SHBETSSHEET 8 No. 794.092. PATENTBD JULY 4, 1905. E. GEARING 8: W. RAINFORTH. APPARATUS FOR THE MANUFACTURE OF STEAM BOILER FURNACES AND FLUES.

APPLICATION TILED MAR. 12, 1904,

9 SHEETSSHBET 9 Illicit. "$942,092.

l ilthl l lt-ll (4 NA ltl l ll l,

i tUllAll L il ll l ltl l ll ll l lit/t hi 1 t l ri'iTenor llirtinizit till-BOILER FURNAQES AND FLUlZSi SPIFZGIFIC Zt'ltTtOlil formingpm-t of Letters Patent lilo. 79 L092, dated July 4t, .ltlt'lli.

fiflpllllitlllml filed rn'nh 1.2, 190 Serial No. 197,901.

To 1111/ Ii /tom H; ii/m1; worm/ 1w;

lleit hHOWHlillitl-\\'O lllll l 1t1l$'ltll hiliiNHJOSllb ii'ig' :tt llarrogulm end l'l niiimin ltmntonrrn, reeidingnt lieede, in theoountv ol' li orlzi, l lngrhind snbjeets o I the it ing of ti r int lsrititiu :u'id lrehu'nt, have invented z ippztrzttus For the lllnnulnetiu-e ol' lfltelunl'loilor l urnnee' end llluosh ol which the following-is :i. speeilieetion.

'lhe present invention has rel'ereneo to imprin'euients in nutehinerv or apparatus for eonverting the hollow streng'theniug portions or ribs (hereinnl'ter culled hollow ridges) formed on :i. l'urneee or llue by u, preliminary oorriugztting process to the required linished seetiou such, lor example, us it hollow bulb like seetion that is to sn v, :z seeliioi'i wherein the side wells of a, ridge are n nil-est to one :tnother at :t pert iuternimliute between the outermost and innernioet parts ol the ridge. Aoeording thereto the ridges l'orined by :1 preliininzn'y oorrugruting |n'o(,-.ess:'tre given the required linishednslmpo by one or more sets ol' eoniponnd eollztpsible and expendible zeg' inentul dies or l'ormers thntere :tdnpted, when in the eolhtpsed condition, to enter the grooves or vnlle vs between the hollow ridges on the exterior of the furnace or line and are then during the rotation of the l'urnnee or line by suitably corrugated or ribbed internal and external uuiin rolls expended sidewise, so R5 to einbruee the hollow ridges between them and Hill]HltttlHHJllSLY press the side portions of emch ridge town-rd ezteh other, the l'ornnttion oi the dies or formers being such as to form be- UVGGIJ eueh zldjm'ient pull of dies or lormers 2i, space or groove corresponding in erosseeetionul shape to that which it isdesired to ilnport to eoeh hollow ridge, so that by the con tinned rotation of the li'irnztee or line the whole of the hollow ridges thereon will be siinultitneously pressed to the re nired linished shape and the valleys between them will be widened. A set oli compound dies or 'l'orniers is mounted in a, holder or support between the housings. "llhereinzty be :tset at oneside only orru. set at both sides of the external roll (the main rolls are usually ol? such A Forumtion that their action upon the llLllJtBflVitli will ceuee rotation ol the tube and reduce the depth ol' the hollow ride'iis from their suminits to tho l OlltUlTlS ol' the \Wtlltlyhl. and the eon'ipound dies or l'oriners mztv then be reused to expend sidowise by movement ol' one ol the uutin rolls toward the other.

in 2t nntohiue or itppnrittns aerording to this invei'itii'in i'ueztns ztre provided wl'lerebv the internul corrugated roll can be moved towztrd :tnd I'roin the external corrugated roll and also longitudinnlly in relation thereto tor the purpose ol' enabling u, tube to he phteed in position in the nutehine For being operated upon :tnd to be {'("JHOWHl therol'ronilllmtus ztre also provided for holding the mid internnl roll in phtee when pri'zseuro is applied by the lllUVlliIlUllt ol' the exterl'ml roll.

in the :teeompznrviug' illustrative drawings there is illustrated :1, inuehino or :ippulntns embodying the several features of invention hereiiutlter speeilied in the (.l.'tll'lllll &1'(lliillses hel'eol'.

l ioure l is :1 seetionnl sideele :iltion; l iu'. 2 an end ele uttion. l ig. 31 is :t plun with some pnrts rcnnovml l UltllGtlitlHlUl (tlfiitl'llQHH. l iu. -l is :,tr:msverse eeetion on the line A A, l ig'. l; zind l igs. 5, ll, nud T are respmrtivelv u, rear elevntii'in, phtn and transverse seetion ol' :1 set ol expanded compound dies or tornun's, l ig's. and 9 are detail views hereinitlter rel'erred to, l ig. H) is n, seetionul view ol' zi eorrugztted pan-tie]Iydorined tube-wall. Fig. ll shows the sznne l'orlmttil'in, but indieanves the :i.p; )lieution thereto of the rolls used to iuipurl; to the tube-val! ehown in Fig. lo the lornnttioushowuin l iox l2. Thelelt-hnl'id:iind righlrhand portionsot the ligure, rospeoti vely, show the rolls at the rotnuieneemei'it and end 01 their o mrztiou. Fig. 12 is u siiniliu' view to Fig. 'lll ol' the tube-wull :il ter rolling between the rolls indieulod in l lo. ll. l ie's" 1? end l3 illiiistntto the :tppliention ol rolls :u'nl'loriners zteeordii'ig to this invention l ie: Lil ilh'lstretes the :tpplieution ol the rolls to the .lornmtion shown in liig. 12. in the h lt-- bend portion of the lieure the rolls are shown in the positions they oeelwy at the eijnulnei'ieeineut ol their operzttiijn'i end in the right-lunnl portion the, are shown in the positions they occupy at the end of their operation. l ie:

13 illustrates the application of the formers to the formation shown in Fig. 12. In the left-hand portion of the ligure the formers are shown in the positions they occupy at the connnencen'ient of their operation and in the right-hand portion they are shown in the positions they occupy at the end of their operation. Fig. 14 shows the. formation resulting from the operation of the rolls and form crs. Figs. 15, it, and 1'? are detail views of a modified former. Figs. 18, '19, and 20 illustrate in side elevation the pairs of rolls used in producing the formations shown in Figs. 1O, 12, and 14, respectively a is the bed-plate of the machine; 7), the housings; c,a lower main corrugated roll adapted to be raised and lowered, as by hydraulically-operated toggle mechanism (Z; a, an upper corrugated roll; f, an extension thereof connecting it to a slidef, adapted to bemoved endwisc by hydraulic means, and g corrugated guide-rolls, all arranged afterthemanncr commonly adopted in previous constructions of corrugatinganachines. Each compound die or former (hereinafter referred to as a former) may conveniently comprise two cheeks 71 which are placed side by side and may beof theshape shown in Figs. Ste 8. They are threaded, with a wedgedilce tongue 2' between those of each pair on a rodor spindlel, that ismounted in the end portions of a holder or support Z, fixed between the housings b. The lower ends of the checks are recessed and rest and slide upon the holder or support lilach tongue; is pivoted on the rod or spindle Z in an opening formed by and between recesses m in the checks it. The outer side of the upper portion of each check is formed with a groove 1), such that the groove formed by and between the upper curved ends of the adjacent cheeks 7/, of two adjacent expanded formers approxiuiately corresponds in crosssection at about the middle of its length to the external cross-sectional shape which it is desired to impart to the hollow ridges on the furnace or line. As will be seen from Fig. 6, the groove formed between two such cheeks decreases in width toward its middle, so as to.

ease the entry and exit of the ridge therefrom. In the arrangement shown when the formers are collapsed the tongues f project beyond the curved inner edges of the checks it, as indicated by dotted lines in Fig. 8, and rest upon the lower roll (1. The arrangement is such that when the roll a is raised in the usual way to grip between it and the roll I, the furnace or flue n, Fig. 4, and the said rolls 1; and (2 rotated so as to cause rotation of such furnace or fine the wedge-like tongues 2; will be raised by the roll 13, and the compound. formers will be expanded and caused during the rotation of the furnace or fine to press the hollow ridges thereon to the required shape.

In some cases the formers are formed as shown in Figs.-l5, 16, and 17, with rollers 1 mounted on studs carried by the checks in such positions that the rollers transmit the pressure to the sides of the ridges at those par where the pressure is greatest.

The bearings for the upper main roll w are held in place vertically by removable pacliing-pieces p, and the roll is adapted after removal of such packing-pieces to be iifted, as by hydraulic means, and held in the raised position while it is being moved endwise for passing it into and witlulrawing it from a furnace or flue. whose hollow ridges are to be [inished to shape. The left-harul bearing is connected by links r to the ram working in a cylinder r on the housing, so that the imaring can he raised into such a position that it will receive the free end of the roll (1 when the slide f is moved inward. When the roll 5 has been slid into position over the bottom roll, it and its bearings are allowed to descend, and the packing-pieces 71 are put back in place. For raising the roll (2 the slide f is provided with a hydraulic cylinder s, the ram of which is connected by rods to a hearing or sling u, in whicl the extension f of the roll can turn.

Before operating upon a furnace or fine tube by apparatus such as described the tube is p *eferably lirst rolled in stages to the sec tional form shown in Fig. i2, the lirst rolling operation havii'ig formed deep and wide but not steep-sided corrugations, as shown in Fig. 10, and a subsequent rolling operation having applied pressure by means of internal and external rolls, as imlicnted in Fig. il,(in adirectujin normal to the axis of the tube) to the sides of the ridges or outward corrugations, so as to steepen the sides of the ridges and widen the iuterimialiate valleys and give to the tine-wall the sectional form shown in lfig. l2. The effect of this second rolling operation is to somewhat deepen the ridges or corrugations and slightly decrease the smallest internal diameter o f the furnace or iiue and slightly increase its greatest external diameter.

The applieatii'in of rolls and formers to the tube-wall of the form shown in Fig. .12 is illustrated in Figs. '13 and 13. it will be observed from Fig. 13 that the rolls 1? and 1' reduce the depth of the ridges or cormgations. They also have the. ell'ect of increasing the smallest internal diameter and slightly decreasing the greatest external diameter, the result being that the wall of the tube is caused to move a little toward the formers which are situated to one side of the rolls. Such movement, which is indicated in Fig. 13, enables the formers to be situated a little farther from the axis of the tube to be treated than would otherwise be the case, so that the movement apart of the checks by the wedges need not be great. The final formation of the tubewail is shown in Fig. 1i produced by closing up the rolls and expanding the dies while the tube is rotated by the rolls.

ing ontwardly-extending hollow ridges comprising inner and outer corrugated rolls,means for moving the inner roll transversely and in parallelism toward and from the outer roll, means for moving the inner roll longitudinally, means for holding the inner roll in its operative position, and means for moving said on ter roll transversely toward and from the inner roll, as set forth.

11. A machine for the inauufaclmrc of steam-hoiler furnaces and lines of the kind having outwardly-extendiug hollow ridges comprising inner and outer corrugated rolls, hyd raulic means for moving theiuner roll toward. and from the outer roll and longitudiuall y, packing-pieces for holding the inner roll in its operative position and hydraulic means for moving said outer roll toward and from the inner roll, as set forth.

12. In a machine for the manufacture of steam-boiler furnaces and lines of the kind having outwaidly-extending hollow ridges, the combination of inner and outer rolls, means for rotating same, formers, expanding means for said formers and means adapted to move the outer roll toward the expanding means and inner roll and to simultaneously actuate the expanding means and formers through the outer roll, as set forth.

13. in a machine for the mamifaeture of Steam-boiler furnaces and fines of the hind having outwardly-extending hollow ridges, the comhinatiou of inner and outer rolls, means for rotating same, formers comprising pairs of cheeks, wedges located between said cheeks and overhanging the outer roll, and means adapted to move the outer roll toward the wedges and inner roll and to actuate the wedges and formers through the. outer roll, as set forth.

1%. In a machine for the manufacture of steamboiler furnaces and lines of the hind having outwardlyextending hollow ridges, the combination of an inner roll adapted to act against the interior of a furnace-tube, formers adapted to act upon the two sides of individual hollow ridges already formed in the tube-wall, devices adapted to expand said formers, a roll adapted to act against the exterior of the furnace-tnhe, means for moving said roll, which roll is adapted to actuate the expanding devices and thereby expand the formers into their-operative positions and also to act upon the tube and in conjunction with the inner roll cause it to rotate, as set forth.

15. In a machine for the untnufacture of steam-boiler furnaces and fines of the hind having outwardly-extending hollow ridges, the combination of an inner roll adapted to act against the interior of a, furnace-tube, formers adapted to act upon the two sides of individual hollow ridges already formed in the tuhe-wall, wedges adapted to expand said formers, a roll adapted to act against the exterior of the furnace-tube, means for moving said roll, which roll is adapted to actuate the wedges and thereby expand the formers into their operative positions and also to act upon the tuhe and in conjunction with the inner roll cause it to rotate, as set forth.

16. In a machine for the manufacture of steam-boiler furnaces and lines of the kind having outwardly-extemling hollow ridges, a. set of formers adapted to impart the desired form to the said ridges, and each ciinnprising pairs of cheeks, rollers n'iounted on said cheeks and adapted to transmit pressure to the sides of the ridges as set forth.

17. In a machine for the manufacture of steanrhoiler furnaces and fines of the lciud lmving ontwardly-extending hollo ridges, a set of formers adapted to impart the desired form to the said ridges and each comprising pairs of checks, rollers mounted on said cheeks and adapted to transmit pressure to the sides of ridges, means for supporting said cheeks in position, movable devices interposed between the checks of each pair and ineansadapted to more said devices so as to separate the checks of each pair at the required times, as set forth.

Signed at Leeds, county ofYork, England, this 25th day of Jmiuary, 1904c.

ERNEST G EA l tlN( i. \V lLLlA hl RA [N FORT ll.

Vitnesses:

\Yimami. J onxs'ron, .lilAnar SIDNEY I-Inrwonrn. 

